Which type of operant reinforcer produces comfort, ends discomfort, or fills an immediate physical need?

It could be argued that participants in Muzafer Sherif's (1936) study converged in their estimates of the amount of movement of a point of light because they were avoiding public embarrassment or social censure from other participants

Sherif demonstrated that this was unlikely when he found similar results a. when participants completed the task with their friends. b. two years later. c. when participants later completed the task alone. d. when participants completed an auditory task in groups.

The name "fluoxetine," which is a common antidepressant drug, is

a. a nonproprietary (generic) name b. a proprietary (brand) name c. an approved Food and Drug Administration name d. a chemical name